期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 58, 页码 33751-33758出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.09.054
关键词
Ammonia borane; Hydrogen storage; Maleic acid; Dehydrogenation; PEM fuel Cell
资金
- Agency for Defense Development (ADD) of Korea [17-114-407-038]
Ammonia borane (AB, NH3BH3) has received great attention as an attractive hydrogen storage candidate because it has high hydrogen contents and releases hydrogen under mild operating conditions. Despite the favorable properties, AB thermolysis has several drawbacks such as long induction period, slow kinetics, and relatively high onset temperature, compared to hydrolysis approach. In this study, hydrogen release properties from AB were investigated in the addition of maleic acid (C4H4O4, MA). Using thermogravimetric analysis, temperature programmed reaction with mass spectrometry, and FTIR analyses, the solid and gaseous products generated by thermolysis of the AB-MA mixture were characterized to understand the reaction mechanism. It was found that with the addition of MA, hydrogen yield and release kinetics were enhanced, while the onset temperature reduced significantly to similar to 60 degrees C. It is likely that the hydrolysis between O-H bonds in MA and B-H bonds in AB was initiated, and the heat released from the hydrolysis triggers the thermolysis of AB. It was also confirmed that a combination of the two additives (MA and boric acid) enables a further increase of H-2 yield while the onset temperature remains at similar to 60 degrees C. Our results suggest that MA is a promising additive to improve AB dehydrogenation. (c) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据